"Haiku, the open source re-creation of BeOS, threatens to become 'The Duke Nukem of operating systems', joked long-time contributor Ryan Leavengood. Actually, after eleven years of development, Haiku still falls four years short of Duke Nukem Forever's long delay, but few other projects have been so long in development. However, with the recent release of Alpha 4.1, Haiku is at last nearing general release." 2013 is going to be very exciting for Haiku.

What gets me about the DNF thing is that 3D Realms expected their core demographic, teens and early 20s, to have even heard of the original game

I think most of the target demographic had heard of DN, if for no other reason than DNF itself. Now, giving a shit about DN and DNF is something entirely different. I gave up giving a shit about DNF sometime in the early 2000's and I'm sure I'm not the only one so how could you expect today's gamers to care?

But really, we've all grown up and have family and work commitments, and obsessing over a game release just seems silly.

As it turns out, we did the right thing since DNF, for all appearances, is a downright awful and horrible game. Stupidly offensive is not the same as edgy, dear Gearbox.
Contrast this with DN: Manhattan Project. A pseudo-3d platformer released without much fanfare which is easy one of the best DN games ever.

None of this maps to Haiku at all. Haiku has a transparent process and has had working code for a long time.